A friction analysis method of passive heave compensation device for offshore platform drilling
A technology of heave compensation and friction mechanics, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as bottom-hole drilling pressure fluctuations, compensation accuracy effects, compensation energy loss, etc. The method is simple and reliable sex high effect
Pending Publication Date: 2019-02-01
SOUTHWEST PETROLEUM UNIV +1
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Problems solved by technology
Compensating the friction between moving parts will lead to the loss of compensation energy, and at the same time, the compensation accuracy of the crane heave compensation device will be greatly affected, resulting in fluctuations in bottom hole drilling pressure
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[0025] The present invention is further described below, and protection scope of the present invention is not limited to the following:
[0026] A friction mechanics analysis method for a passive deep-sea heave compensation device used in offshore platform drilling, which includes friction mechanics analysis of the compensation process and simulation analysis of friction damping effects;
[0027] The friction mechanics analysis of the compensation process includes the following steps:
[0028] S11. Calculate the pressure loss in the hydraulic pipeline in the heave compensation device:
[0029]
[0030] Among them, L is the length of the hydraulic pipeline; D l is the diameter of the hydraulic pipeline; λ is the friction coefficient; ρ is the density of the hydraulic oil in the hydraulic pipeline; V l is the flow velocity of hydraulic oil in the hydraulic pipeline;
[0031] S12. When considering the friction force F in the main hydraulic cylinder f When , a relatively co...
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The invention discloses a friction force analysis method of a passive deep sea heave compensation device for drilling on an offshore platform, which comprises a friction force analysis in a compensation process and a friction damping influence simulation analysis. The friction mechanics analysis of the compensation process comprises the following steps: S11, calculating the pressure loss amount inthe hydraulic pipeline of the heave compensation device; S21, The simulation model of crown block heave compensation system is established by use of 20-Sim software. S23, the friction force model, the passive compensating part and the force balancing hydraulic cylinder are placed in parallel with the active compensating hydraulic cylinder, in order to analyze the friction force influence of the compensating hydraulic cylinder of the crown block heave compensating device in the process of motion compensation. The invention has the advantages that the method is simple, the friction force in thecompensation process can be studied from two aspects of the passive compensation part and the active compensation part in the crown car heave compensation process, and the invention makes great contribution to the design of the heave compensation device with high reliability and long service life.
Description
technical field [0001] The invention relates to the technical field of friction calculation in heave compensation devices, in particular to a friction mechanics analysis method for passive deep sea heave compensation devices used for offshore platform drilling. Background technique [0002] At present, with the depletion of land resources, the strategic vision of the world's economic development is focused on the ocean, and the development of marine technology and high-tech equipment is particularly important. In the field of petroleum, with the development of China's economy, especially the rapid development of the petrochemical and automobile industries as the pillar industries, the contradiction of insufficient supply of oil and natural gas has become increasingly prominent. In view of the depletion of onshore oil resources, marching into the deep sea has become an inevitable trend. The crane heave compensation device installed on the floating drilling platform or drilli...
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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06
Inventor 刘清友王国荣周守为毛良杰
Owner SOUTHWEST PETROLEUM UNIV